Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
अनावृष्ट्यग्निभयकृदनर्थनृपविग्रहः ।वसुवैष्णवविश्वेंदुधातृभेषु चरन्बुधः ॥ ३९ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 39.
When it rises, it brings drought, fear of fire, trouble and war among kings. Mercury moving in Dhanishta, Shravana, Uttara Ashadha, Mrigashira and Rohini ...
Simple meaning: Mercury's rising can bring drought, fire fear and war between kings.
भिनत्ति यदि तत्तारां बाधावृष्टिभयंकरः ।
Mercury splitting those stars brings trouble and fear of drought.
तदा दुर्भिक्षकलहरोगानावृष्टिभीतिकृत् ।
Mercury in the stars from Ardra to Magha brings famine, quarrels, illness and drought.
क्षेमं सुभिक्षमारोग्यं कुरुते रोगनाशनम् ।
Mercury in the six stars from Hasta brings welfare, food and health.